Those links are to real viable hydrogen powered cars not HHO system based cars. Not HHO cars.
Yes hydrogen as a fuel for both fuel cell power and IC engine power is viable and well known tech and we even have a few running around here as well and we already have one hydrogen fueling station which is owned and operated by the local university agricultural research center where I too can go and get a tank of hydrogen from as well if I have the right tank and paperwork. ;
I don't think anyone here has ever argued that hydrogen can not power a vehicle. Rather the the issue is that HHO from water being generated by the vehicles own power then fed back into the engine to further power it does not work.
If you want to prove me wrong hook your HHO generator up to a common automotive alternator and battery system and then drive that alternator from a small engine of your choice then feed the HHO gas back into the engine and see if it runs on its own or if it even uses less gasoline fuel as Believe me I have tried and it does not work.
As far as feeding hydrogen and oxygen into vehicles engine and getting a truely measurable power and mileage increase well I think that effect simply comes from the issue that todays vehicle engines are designed and tuned and designed to run on an air fuel ratio for emissions standards that favors a clean exhaust pipe and not one that produces efficient conversion of fuel energy to mechanical power. So by simply by changing the oxygen level in the incoming air by a percent or two you can effectively change the computers tuning to a perceived A/F ratio that slightly favors the mechanically efficient A/F ratio range over a cleaner one.
I can assure you that as someone who has worked with engines of all ages and designs I can safely tell you that when it comes to modern emissions compliant designs its possible in some engines to nearly double the power and fuel mileage numbers at the same time just by changing the engine to a setup that favors mechanical efficiency over a supposed clean burning!
Believe me I have done it myself and am working on doing it to another truck of mine some time this summer.
I have a 1997 Ford super duty with an emmisions built 460 V8 engine that barely tops 200 HP and 6 MPG highway. I also have a non emmisions 460 I built and ran in another pickup some years ago that with a change of compression, camshaft, intake and exhaust plus a carburetor rejetting pushes the high side of 400 HP and was regularily running the mid teens for fuel mileage. They were the same base engine and similar truck weight and size but by getting as far from the emissions compliant engine setup as I could get things became far more fuel and energy efficient and no HHO was involved!
